A) 8 s
B) 6 s
C) 4 s
D) 2 s
Correct Answer: D
Solution :
From Newtons second law of motion, \[F=ma\] where m is mass and a is acceleration. Given, \[F=1000\,N,\,\,m=100\,kg\] \[\therefore \] \[a=\frac{1000}{100}=10\,m/{{s}^{2}}\] From equation of motion, we get \[v=u+at\] Where v is final velocity and u is initial velocity. Given, \[v=25\,m/s,\,u=5\,m/s\] \[\therefore \] \[25=5+10\,\,t\] \[\Rightarrow \] \[t=\frac{20}{10}=2\,\,s\],
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